#4F66E1#4F66E1

#4F66E1 is a mid, vivid blue. Relative luminance 0.166; OKLCH L 56.1% C 0.188 H 271.1°. Best body text is #FFFFFF at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#4F66E1
RGB	rgb(79, 102, 225)
HSL	hsl(231, 71%, 60%)
HSV	hsv(231, 65%, 88%)
CMYK	cmyk(64.9%, 54.7%, 0%, 11.8%)
CIE-LAB	lab(47.75, 30.15, -65.36)
CIE-LCH	lch(47.75, 71.98, 294.77°)
OKLab	oklab(56.11% 0.0036 -0.1879)
OKLCH	oklch(56.11% 0.188 271.1)
XYZ	xyz(21.5618, 16.5993, 73.2873)
Luminance	0.1660 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F66E1 #E1CA4F

analogous

#4FAFE1 #4F66E1 #814FE1

triadic

#4F66E1 #E14F66 #66E14F

tetradic

#4F66E1 #E14FAF #E1CA4F #4FE181

square

#4F66E1 #E14FAF #E1CA4F #4FE181

split-complementary

#4F66E1 #E1814F #AFE14F

monochromatic

#1A2F9B #233ECF #4F66E1 #8393EA #B8C1F3

Accessibility & contrast

On white

4.86

#4F66E1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#4F66E1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4F66E1

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F66E1	#FFFFFF	#000000	##FFFFFF
##4F66E1	1.00	4.86	4.32	4.86
#FFFFFF	4.86	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0078E5

Deuteranopia (green-blind)

#006BDF

Tritanopia (blue-blind)

#00839A

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #4f66e1;
/* rgb */ color: rgb(79, 102, 225);
/* oklch */ color: oklch(56.1% 0.188 271.1);

Tailwind

colors: {
  custom: {
    50: '#8f91eb',
    500: '#4f66e1',
    950: '#000000',
  },
}

SCSS

$custom: #4f66e1;
$custom-light: #8f91eb;
$custom-dark: #000000;

JSON

{
  "hex": "#4f66e1",
  "rgb": {
    "r": 79,
    "g": 102,
    "b": 225
  },
  "hsl": {
    "h": 230.548,
    "s": 70.874,
    "l": 59.608
  },
  "oklch": {
    "l": 0.56112,
    "c": 0.18792,
    "h": 271.1
  },
  "luminance": 0.16601
}

Semantic roles & 50–950 ramp

primary

#4F66E1

secondary

#E2D9AA

accent

#D13AEE

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0E0C16

muted

#7E7D84

Preview Lab

Preview with #4F66E1

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →